Semi-automatic roller-retainer milling-machine



T. ZETTERLUND. SEMI-AUTOMATIC ROLLER RETAINER MILLING MACHINE.

APPLICATION FILED OCT. 3. l9l8.

ATTORNEY T. ZETTERLUND. SEMI-AUTOMATIC ROLLER RETAINER MILLING MACHINE.l

APPLICATION FILED OCT. 3. IQIII.v 1,333,o53.

7 5 SHEETS-SHEET 2.

ATTORNEY4 Patented Mar. 9, 1920.

T. ZETTERLUND. SEMI-AUTOMATIC RoLLER RETAINER MILLING MACHINE.

APPLICATION FILED OCT. 3. |918. 1,338,053. L Patented Mar. 9, 1920.

5 SHEETS-SHEET 3.

. 66. fi? y wITNEs-s: INvENToR ATTORNEY T. ZETTERLUND. l f `SEMI-AUTOMATIC RoLLER RETAINER MILLING MACHINE. 1,333,053.

APPLICATION FILED OCT. 3. ISIS.

Patented Mar. 9,1920.

5 SHEETS-SHEET 4.

ATTORNEY l T. ZEUERLUND. SEM|-AUT;0MAT|C ROLLER RETAINER MILLING MACHINE.

' I APPUCATON FILED OCT. 3| |918! 1,333,053. Patented Mar. 9,1920.

5 SHEETS-SHEET 5.

WITNESS INVENTOR /jy//M W ff ATTORN EY UNITED s'rArEs PATENT oFFICE- 'rHEonon zEfITEnLUNn, on MILWAUKEE, WISCONSIN, AssIGNon To HAnLEY-nAvIDsoN I Moron COMPANY, lor MILWAUKEE, WISCONSIN.;

' snm-AUTOMATIC ROLLER-RETAINER MII;I.INe.-1\IACIIINIS:.v

Y VIt is in general the object of my lnvention `to simplify the structure, to improve the eiliciency and to increase the rapidityof opera-` tion of machines of this character. as well ras to increase the facility with whichwork articles may be placed in and removed from the machine. itbeing moreparticularly anv object to embodythe foregoing advantages in a machine'including an annular gang of milling members adapted to drill .out the l roller receiving` openings of a roller retaining 'ring of the type conventionally employed in roller bearings.

Arfurther and important object resides in the provision, in a machine ofthe character described, of anv arrangement including a plurality ofk chuck members selectively movable to cutting alinement to the milling tools whereby the insertion of a workV member in one of the chucks maybe carried out simultaneously with the milling operation on a work member secured 1n another chuck to thus procure Va milling operation interrupted lonly for the periods of time necessary in presenting freshlv filled chucks to the milling tools. more detailed objects in this connection residing in the provision of means for insuring proper relative position Vof the work member with respect to the milling tools at the outset ofthe millingoperation, and for-preventing the institution of such millingfoperation until this position has been assumed. i y A still further object resides in the provision of means for readilv adjusting the depth of the cut of the milling tools;

lVith the above and other objefts and advantages in view. my invention resides in.

the novel construction, .combination and ar- Specicaton of Lettersxtent.V l

Y Application filed.y October 3,1918. Serial No. 256,715.

milling mechanism. e Y

Fig. 6 is a detailed sectional view, enlarged, on the plane of Fig.2, showing the drive for one of the milling shafts.

Patenten Mano, ,1920.v

rangement of parts, which will bey moreparticularl'y hereinafter described and pointed; out in theappendeol claims. l g

in the accompanyingdrawings: Y

Figurecl is avertical longitudinal sectional View `through an automatic multiple millingmachine embodying my invention,

thel plane of this gurevbeing indicated by the line 1-1 of Fig. 2.

Fig. 2 is a transverse sectional ,view through the milling head end of the mafl chine on the line 2,-9., of Fig. 1. Fig.3 is an elevational View of ators end of the machine. l

Fig. 4 is a horizontal sectional Vview through one of the chucks. Fig.y 5 is a detailed sectional viewV showing the operation of the driving pawl for the the oper- Fig. 7 is an end view of one of the retainer rings, comprising the work of the. present machine, and showing the means for alirliing the cuts of the ring lwith the milling too s. Y

Fig. 8 is a side view of the ring.

Fig. 9 is view similar to Fig. 8`showingthe completed work. l f

,Fien l0 is a detailed view of the turretl shifting cam. L

Fig. 11 is a detail sectional view; of a yieldable holding cam of the turret shifting Y mechanism.

Referring now more particularly to the drawings. there is provided a table or base plate 20 having depending casing walls at its edges. merging into hollow supporting legs 21 for the table. Upstanding atv one end ofthe table is a cylindrical headl stock casingQQ having its axis disposed horizon-, tally and'provided 'with openings in its 4ends in which are positioned bearing rings 23I -proj ectin g inwardly of the walls. Nested within these bearing rings are rings 24 ha v- Ving alining annular series of bores extend-- infr therethrough parallel to their aXes Journaled in each of these bores is a vmilling shaft 25, said shafts extendirg acrossV the space betweenthe rings 24. and having their inner ends projecting Vpast'the inner ringl and carrying milling tools Q6 in any suitable manner, ...Extended througlithecasing and.

within the rings :24 is corelcylinder 27, secured by keys 28 to the rings 24 and having itsinnerend enlarged in cup shape and forming an annular shoulder. Between this shoulder and the end faces'of the adjacent ring 24 is anannular packing `disk 29 chan-V neled onits -face adjacent the ring 24 and of such width as to project from the pef riphery of the core cylinder 27 and receive the milling shafts 25 therethrough. The core cylinder 27 is provided with a rearward extension projecting from the casing and mounted on this sectionV is a cupped end plate 30 which is held in clamping relation to a flanged rearportion-oithe adjacent ring 24 by a `nut 31 threaded on the cylin- 1 der extension, the Vforward end of the cylinder being thus drawn rearwardly to compress the disk v29 between the shoulderl of the .cylinder and the face of the adjacent ring 24. The cylinder is provided with a longitudinal passage-way 32 extending therethrough and which connects at its forward end with branch passages of a plug 33 threaded in the cupped forward end ot the cylinder, the passages Vof this plug terminating in radial spray apertures 34' adapted to discharge oilfagainst the milling tools in operation thereof. 1 End'thrust bearings for the drill shafts 25 are 'afforded by balls 35 disposed in the shaft bores of the rear ring 24 and engaged by adjusting screws 36 threaded obliquely through the peripheral portions of the cup end plate V30.

Disposed'within the` casing and journaled` on the inner portions of the bearing rings 23 is a drive annulus 37 having worm teeth* on its outer periphery engaged with a worm 38 carried on va shaft 39 disposed trans versely in the lower side of this casing. Gear teeth are mounted on the inner periphery of this drive annulus between the drive shaft bearing rings 24, these O'ear teeth being preferably cut in a second annulus member 40 'fitted within the annulus 37 and extending between the rings 23 and secured to the annulus 37 by radial lock pins 41 passed through both me ibers. An annular partition flange 42 is mounted'on the core cylinderv 27 between the'rings 24, said flange also receiving the milling shafts therethrough, and mounted on alternate shafts at one side of this partition are gear pinions 431m mesh with thegear teeth Vof vthe annulus member 37 .j The remaining shafts have similar gear pinions, also designated as 43, disposed VonV 'the opposite side of the partition, which thus serves to hold the pinions Vagainst mutual inter-locking relations, the lpinions being by this arrangement disposed in staggered relation throughout the annular serieso'f milling shafts lwhereby to Y permit a desiredrnaximum closeness of the shafts. Oil is supplied to the milling shafts through convenient lpassagesfi44 .extending from the top of the casing22, and continuous lfeed of oil is provided for theV milling tools by a pipe 45 connecting with the rear end of the'passage 32 of the core' 'cylin der 27.* The a'nnularpacking disk 29 prevents leakage of shaft lubricating oil be-V tween the'core cylinder 27A and the inner journaled ring 24 and also throughtheshaft journals in said ring.

An. exceedingly simple and compact milling head structure has thus been provided sociated milling tools maybe -eliciently operated. The independent endV thrust bearings aiorded the milling tools by the screws 36 provides for longitudinal adjustment of the shaftto procure dispositionv of the cutting end faces of the milling tools .in a common vertical plane. or ,j i

Thevworm drive shaft 39 for the milling gear ann'ulus is journaled in bushings 46 secured at the sides of the casing 22 and has end thrust bearing 47 against one ot? said bushings in the Vdirection of longitudinal stress. For driving this shaftvas well as the work feeding mechanism, a shaft 48V is jouinaled'in `the outer wall-of a casing 49 secured at one side lof the table, carrying Within said casing a :gear 50 meshing'with apmion 5l on the adjacent projectingend of the shaft 39. Theinain drive shaft48 Valso carries -a pinion 52--meshing with a gear wheel 53 mounted on Va feed Idrive shaft 54 extending transversely Yof the machine Vand 'journaled in vbushin 's 55 mounted in tho'lower portions of the sic Y oi' the table.A Mounted `on Athe shaft V48 outwardly of the ,casing 49 is a belt wheel 55 or any suitable drive element. This 'wheel and the gear 50 and pinion 52 are helden e casing walls whereby an annular gang of closely asthe shaft 48 by a rod 56 extending axially i. i

through the shaft and l headed on its inner end to engage the pinion 52,a3=retain ing nut 57 for the wheel 55'being threaded` ing therefrom, with-their'outerwendsverti- Y' striction by bolts 64 passed through pairs of ears on their split edges.V Thus, when the turret `plate is retracted, the collar may be revolved to selectively present .chucks carried'in its vcollars -63 in workingalinement wth-nthe'inilling head, aud..tlius, while cally directed and terminating in-'sp'lit .chuck receiving collars 63 adapted for clamping re-` Lasa-,ossi

themilling operation is carried 'out` in* conjunction lwith work carried by one of the turret arms, the chuck of the other turret arm may be manipulated to receive a sec-A ond work member.

well as certain mechanism hereinafter described andsetting up the general operation of my machine,l may be employed in connectionv with various cutting operL tions other than the'specific operation herein contemplated `as one example of the work of my machine. In describing .the'chuck members of the turret arms, however, I shall first describe the specific roller retainer ring on which the present machine Vis adapted to This ring comprises a body an-V operate. nulus a as shown in Figs. 7 to 9 of the drawings, and in a manufacturing step prior to the V.milling operation of my machine, the bodyfannulus is provided with a series of slots Z) extending parallel to its aXis thr0ughout the major portion of its'width from one side,fsaid slots being thus open at one side of the ringandzbeing formed in diametrically opposite sets of pairs in thel present instance, although -it'will be appreciated that any regular method of forming the slots purposeof .removing the bulk of material necessary to be cut away in the finishing operation of theirollers, whereby the milling foperation effected bythe presentlmachine merely widens the slots .and curves the sides thereof tofproperly receive the bearing rollers, ythe diameters of the milling tools be ing greater than the thicknessof the work material as shown particularlyby the com-Y pleted work member illustrated in Fig; 9.v

Each j of the chucks for -holding these retainer ringscomprises av body sleeve rclamped in one of the turret arm collars 63y and having al cupped enlargement 66 atjits end remoteA from the'turret axis, `said fenlargement 'having a frusto-conical cam face 67kat its mouth portion. 'The bodyv sleeve 65-is locked within the collar63 by aflock pin 68. Engaged in the" cupped end portion of the sleeve '65 is al sleeve 69 whichvext'ends into thev cup enlargement and has threaded thereon a work seating annulus 70,: Slidable in this sleeve 69 -`s a contracting shaft 71fwhich has itsrear endV threaded inthe hollow enlarged end of a shaft 72 .whichlin turn, has a coarser threadedfengagement in the sleeve extending in Vopposite directions. rlhe Vshaft 72 ,carries anflupstanding handle bar- 73;

Slidable on the sleeve 69 isa ring 74k and` passed through this ring :and through the shaft 71 and through a transverse axially elongated passage-way 75 in the sleeve 695is a *piny 76. The ring itv of forwardly eXtendingclampingjaws 77 which' are' resilientlyurgedoutwardly 65, the threads of these shaftsl 74 carries ,av plural-l against the cam face 67 ofthe body enlargement`66. f f

Thus, upon,rotatingthefshaft 7 2, a compound threading movementA will be procured in connection with the shaft 7l which will All of the above described structure, as

shiftthe ring7tv either inwardly or outwardly and consequentlyexpand or contract w 67, and thus one of the in proper registry with the milling tools op l posed portionsv of the chuck casing or lcup 66 and adjacent jaw portions are provided with. alinedy slots bar or other tool may be Vinserted to aline correspondingA slots of the retainerringwitn said recesses, itbeing noted that the line 78. into which a suitablefp connecting the recessesis disposed at one l side of. the aXis ofthe chuck inthe present` instance in accordancewith the corresponding disposition of the opposed ,pairs -of 'ring' slots. It is further noted that the inner faces of the jaws are cut away at regularly spaced y portions'to provide clearance `for the milling tools in projecting outwardly of the pe-V may be employed, these `slots being forfthe ripheries of the worlrrings.V A Y v*For automatically feeding and retractingthe turretwith respect'to `the milling head, such feeding and retraction-constituting one cycle ofthe operation of lthefinachine',v a;

shift bar 7 9 ismounted longitudinally'un-f the base block, spacer blockl SSand shiftV lli) Adjustment of the i relative positionsof the shift4 bary and turret base is. afforded .by a screw ,84 threaded ,ini the 'outer kendportion of thenshift 'bar and passed through a plate pending from base block, hiss'crew being terminated in a1 vknurled head 86'having suitable graduationsthereon, whereby a most exact degree of, adr justment may.

i 85seeured to and del Y the outer end of the turret Y be-procured. It may-be atl this pointgstated that the shift bar 79'hasay constant .degreeAV of reciprocating movement, and thusadjustment of the turret base with respect totheshift bar will procure -an ad justment ofthe innerlimit of movement of the turret with respect to themillingyhead.

A `shaft 87 .-is carried byV a pair of spaced.

sills transversely connectingv the table casing wall belowwthe milling head hub of this worinv ywheel is extended Ydial lock lmounted. on this shaft is a sleeve .89 on which is journaled a worm wheel 90 Vmeshing with a worm 91 mounted on the feed drive shaft' 5-1 heretofore described. T he 1nwardly and has secured thereon by the rapins 92 a clutch ring 93 having Vregularly spacedright-angular clutch rethereon within the cesses at its outer wall portion. Alsorotatably mounted on the sleeve 89 between the clutch ring 93 and the inner :sill 88 is a cam disk 94 having a cam Harige 95 projecting.

from its lside portion adjacent the clutch ring 98and partially embracing the same. Slidablymounted in a pasage-'way 96 ex. tending transversely through the cani disk is a' pawl 97 having a tooth on its end adj centV the clutch recesses selectively engageable therein and being resiliently urged in the-opposite direction by a spring 98 coiled p passage-way. The pawl 1s held against rotationin the passagefway l b v a key 99 engageable in the kerf' thereof.

The inner sill 88 is` provided with a transverse passage 100 adapted to register with the passage-way 96, the end wall of saidv passage-way 100 there-adjacent being wid# ened at one side and thus, asshown in Fig. 5, as the'passage-ways move into registry, the pawl 97 isurgedby-its springf98 'out of en- Y gagement with the. clutch recesses of the kthe cam flange of the Y ,urging` the shift barto'retracting position term ediate tending and thus' holding the roller 102 cam, a Vplunger head 103 is slidably mounted in a guide loop 104 depending from the inportion of the shift bar, and exfrom this plungerhead is a shank 105 having its free end'slidable in abearing 106 depending `from the outer endportion A roller 107 is mounted-in of the' shift bar. the plunger head-and is yieldably urged against the fiat side of the cam disk remotek from its flangeby a main retracting spring 108vcoilednon 'the shank 105 between the bearing 106 and a stop nut 109 threaded on the shank adjacent the guide loop 104. A a fThus, upon each complete rotation of the cam disk, areciprocation of the' shift bar and consequently of the turret will be ef# fected and `operation of the machine will be stopped at the proper time, when the 'milling action has been completed sothat the stopping of the machine affords an indicationr of Vthe completingof the milling'action where-V upon the operatormakes the'necessary-manrotation Vin a Vtuting rotation of the cam disk, and as this passage-way to abut VVagainst the wall of dependingVV portion at a. erating stress in the machine, portion and held by a retain- Y against theV mountedin the lower casing` V22.

rgsssgoiseV a ual'manipulations to procure the succeeding milling operation. For manually instituting of the camV disk a plunger shaft 110V is provided havingv its head end slidableV in the passage-way 100 of the sill 88 and ex-` tending forwardly therefrom andV provided with a reduced intermediate end portion 111 slidable inrthedepending shank ofl a keyhole slot 112 formed in thef forward table Casing wall, the consequent shoulders formed by the reduction of this intermedi-- ate portion of the shaft forming stopsengageable with the Vwall to permit limited reciprocating movement of the shaft. VTheforward endA ofthe shaft terminates in a handle 113 and it is resiliently urged to its limit of forward movement by a leafspring 114 secured to the wall and engaging the forwardshoulder ofV its reduced portion. Upon pushing the shaft inwardly against the action of this spring A114', its plunger end will'engage the pawl 97, forcing it from the passage-way 100 and engaging its toothend recess ofthe clutehring 93, thus instirotation proceeds, the pawl vis held in1`engagement with the cam disk by the enlarged inner face ofthe sill 88 until the p'awl comes again' in registry with the passage 100. Y

A "detent and lia-lance pawl 115 is slidahly mounted in the camdisk ata point approximately diametrically f oppositeV the drive pawl 97, being yieldably urgedinto engagement with the recesses of the cam ring 93" and riding into andV out off said recesses when the cam 'diskis stationary.

So as to procureminimum friction and opitis desirable that the expansilespring A108 be ,onlysuiiiciently strong toV retract thevslide bar and turret. VAt the completi on'of the milling operation however, there is a tendency forthe milling tools to stick in the slots o' of the i work'and preventV operation of the spring, and to overcome this tendency without impartingv undesired retractile stress throughoutthe operation of the machine. I mount a plunger bary 116'in the recessed inner end of the turret base 58, this bar having an inter-- mediate headed portionjheld in the recess by aplug 117 through which thebar slidably projects', the bar being urged outwardlvby an expansile spring 1].8 coiled thereon with-a in the'recess. This plunger bar is engageablewith an abutment,V bar 119 adiustably portion-of `the head Thus, as the turret" moves to its'V limitof inward movement, the bar 1164engagesthe bar 119 to compressthe spring 118, whereby the force of the spring is exerted in ,assisting the spring 108 to retract the turret,

g Y The inner endV ofthe base bar 5`8l`of the 130 the basefwith application of feeding power turret also carries a slide head 120 engaging the bottom surface of the lower pan-shaped portion of an oil casing 121 surrounding ,the

drills, whereby to counteract Vlifting tendency Vof 4the inner end of the turret base by reasonof pressure of the milling tools above below the base. l,

I have vprovided means `for holding the .turret chucks in proper alinement with the milling tools during the feeding operation of Y the turret, and the actuation of such holding s means toward and away from operative position also serves to actuate safety mecha-` the turret' base block 58, and mounted on one end of this shaft is a sleevef123 projecting outwardly from the shaft, carrying a handle 1211 at its end and having a plug 123a xed in itsl outer portion, and affording securement for one end of a spring 125 coiled on the reduced.'extremity ofthe shaft 122and having its other end secured to said shaft, whereby the sleeve is normally urged to r tation in one direction, the shaft being held v rotation in the base block 58 by a set against screw 126 inserted in the block and` engaging v-thereagainst The sleeve isv formed on one of the arms of a-locking `block127JV whose other arm is mounted on the end of the shaft 122 remote from theV sleeve, saidarms eX- tending obliquely upward and outward from .the shaft, and the block being provided in its upper portion with a squared recess adaptedto snugly selectively receive squaredenlargements 128 formed on theV outer end portions of the turret arms 62, one side of the block 127 being beveled as at 129, whereby these 1 square enlargements may ride intolocking v engagement with the recesses by lrocking the vblo-ck downwardly against the action of the spring 125.

. Pivoted to-and depending from one side of the block is a link 130 yhaving its lower end pivoted `to one end of an angular link `131 whose other end is pivoted to the forward end of a-link 132, theother end-of the.

link 132 being in turn pivoted to one of the side casing walls of the table at l133. EX- tendiiig inwardly from the link 131 at its juncture witlithe link 132l is a ylocking arm 134 having its free end portion flattened and arcuately re'essed Ato engage the outer shoulder ofthe reduced portion 111 of the plunger shaft 110 which institutes operation of the turret feeding mechanism.

Thus. when eitherof the chucks is adjacent the millinghead, the holding block 129 will bedepressed, and the locking arm 134' will be `engaged behind the shoulder of the shaft 110 to prevent operative mvement of saidl shaft, this locking arrangement being released by lifting movement of the block i upon engagement in its holding recess of the turret arm enlargement 129 ofthe chuck ren'iote from the milling head, thus freeing j,

placing of the work articles in the chucks and the institution of the feeding and retracting operation vby i pressing the handle 113 of the shaft 11() at the permitted periods. While a work article isV being milled in theV rearward or inner chuck, the operator isengagedl in removing the previouslymilled work article and .inserting a fresh article in the other chuck. Thus, when one milling operation has been completed, and the turret moved to retracted position, the operator depresses the handle 12aL controlling the holding block, permitting swinging movement of the turret arinsto dispose the newly filled chulck in cutting alinement with the milling too s.

While I have shown and described a preferred embodiment of my` invention it lwill be understood that various `changesand iodifications of structure and arrangement, within the scope of the appended claims, may lbe employed -to meet different conditions of work without departing in any man'- ner from the spirit of my invention.

Vhat is claimed is:

1. Ay cutting machine including a tool head, a turret mounted .for movement toward and away from the tool head, means lfor automatically feeding the turret toward the' tool head,fa plurality of work holding members carried by the-turret and selectively movable to cutting alinement with the tool head, means for locking the work holding `members in such positionand means forv preventing actuation of said automatic means prior to movement of said work hold- 'said locking means for preventing movement of the said manually movable member prior izoy f head, a turret mounted-.for -movement toward and away lfrom ythe tool head, means for automatically feeding the turret toward "the toolhead, a plurality of work holding members"carried bythe turret andA selectively movable to cutting -alinement with the tool head, a manually movable member for instituting operation of said automatic feeding means, alholdmg member movable' for co-action with the work holding members to hold them incutting alinement with the tool head, and means operable by movement of said holdingmember for preventing-movement of said manual member.

l. A Vcutting' machine including a too head, a turret Ymounted for movement toward and away from the tool head, means for automatically feeding the turret toward the tool head, a plurality of'work holding members carried by the turret and selectively movable to cutting alinement with the tool head, afmanually movable member for instituting operation of said automatic feedin'gmeans, a Vholding member movable Vfor Vco-action with `the work `holding members to hold them in cutting alinement with the tool head, a shoulder on said manually movable member, a Vlock arm movable for engagement with said 'shoulder to prevent movement lof said manually movable memberand a link connection between the holding mem'ber and said lock arm.l

V5. A cutting machine including a tool head, Laturret base movable toward and away from the tool head, means for automatically procuring lmovement of the turret base, arms rotatably mounted on the turret base, work holding members carriedby said arms and movable upon. rotation of the arms to `cutting' alinement with the tool head, a holding member carried by said base and engageable with the arms to hold them against rotative movement on the base, means for manually institutingautomatic movement of the turret base and means'operable by movement of said holding member for preventing operation of said manual means.

6. A Cutting machine including -Va tool head, va turret base movable toward and away from the tool head, means for autofmatically procuring movement of the turret base, arms rotatably mounted on the turret base, work holding members-carried by `.said arms and movable upon rotation of the arms to cutting alinement with the tool 47.i-'Acutting machine including'a main support,:a tool rhead mounted onsaid support, avturret movable von said support towardand awayV from'the tool head, means carried by said support for procuring automatc movement of the turret, a pluralityof work holding members carried by thel turret and selectively movable tof cutting aline- 'mentxwith the'tool head, a manually movablemember carried by the main support for instituting' operation of the -automatic feeding means, a member carried by the turret and movable for co-action with thework holding members to selectively Vhold them in cutting alinement with the tool head, a series -of mutually connected'links pivoted'to ythe said member and to the main support, and

anarm carried by one of said links and engageable with the manually movable member, -to prevent movement vthereof in certain .positions of said holding member.

8. A cutting machine including a tool head, a turret movable toward and away fincluding jaws Vhavingitheir gripping surfaces out away to provide clearance for the outer portions of theV milling tools.

10. In almilling machine of the class-described, a milling head casing, :spaced bearing lrings in the casing,journal rings nested in the bearingrings, an annular series of milling shafts extending betweenfthe rings and journaled in said rings,la core'cylinder extending through the journal rings, 'an oil passage extending through the `core-cylinder, means for securing fsaid coreV cylinder, rings and casingtogether, a drive annulus journaled on the bearing rings and provided withinternal and Aexternal teeth, pinions on the milling"shafts-between the rings meshing-with thef internalfteeth fand a drive means meshingvwith the external teeth.

' ll. In va milling machine ofrthe class-described, *a `milling' head casing, spaced vbearing-rings -in the casing, journaled rings nested in the bearing rings.- anannular series of milling shafts extending lbetween the rings and journaled in said rings, a core'cylinder extending throughthe journal rings, `an oil passage extending through the rcore cylinder, `a shoulderontheiforward end of the core Jcylinderwfor :preventing -relative movementof the core cylinder rearwardly Y, en g in the rings, an end plate on the rear of the core cylinder engageable Withv the adjacent ring, a binding nut threadedv on the core cylinder engaging said end plate, a drive annulus `journaled on the bearing rings and provided with internal and eX- ternal teeth, pinionsv on the milling shafts between the rings meshing With the internal teeth anda drive ineans meshing With the external teeth.

12. A cutting machine including a tool head, a turret movable toward and aivay from the tool head in one cycle of movement, meansv for automatically procuring one cycle of movement of the turret-and for stopping the turret at the end of said cycle and manual means for instituting said cycle of movement. f

``13. cutting machine including a tool -head, a work carrying turret movable toward and away from the tool head, ashifting member connected with the turret, a cam engageable with said member for imparting one reciprocation thereto upon one rotation lof the cam, means for instituting rotation of the cam, and means for automatically stopping rotation of thecam upon completion of one revolution. t

14. A Vcutting machine including a tool head, a Work carrying turret movable tovvard 'and away from the tool head, a shifting member connected with the turret, a cam engageable with said member for imparting one reciprocation theretoV upon one rotation yof the cam, means for instituting rotation of the cam, means for automatically stopping rotation of the cam upon completion of one revolution and' a spring urging. said member against the cam.

l15. A cutting machine including -a tool head, a' turret movable toward and away from the tool head in one cycle of morement, a shifting member connected with the turret, a continuously driven member, a cam driven member and having its cam portion engageable with the shifting member to shift the same, means for connecting the cam disk with the continuously driven member, and means for releasing such connection upon completion of one cycle of movement of the turret.

16. A cutting machine including ai toolhead, a turret movable tovvard and avvay from the tool head, a shifting-member connected With the turret, a continuously driven member,l a cam disk mounted adjacent said continuously driven member and having its cam portion engageable with the shifting member to shift the same, a stationary member mounted adjacent the disk and provided with a passage, a pawl slidablyv mounted in the disk and engageable with the continuously driven member to procure rotaable into 'the passage of the stationaryl member to procure disengagement thereof from I v the continuously driven member and to stop rotation of the cam disk, and means for moving said pavvl' from the passage to institute driven rotation of the cam disk.l

17. yA cutting machine including a tool head, a turret movable tovvard and away from the tool head, a shifting member connected with the turret, a continuously driven member, a cam disk mounted adjacent said continuously driven member and having its cam portion engageableY with the shifting memberto shift the same, a stationary member mounted adjacent the disk and provided with a passage, a` paWl-slidably mounted in the disk and engageable With the continuously driven member to procure rotation of the disk and said paivl being moi/'able into the passage of thestationary member to procure disengagement thereof from the continu'- ously driven member and to stop lrotation of the cam disk, and a longitudinally slidable shaft having one end engaged in the passage and having the other end manually Vengageable to move the paivl from the passage.. p f i Y Y 18. A cutting machine including a tool head, a turret movable tovvard and away from'the tool head, a shifting member connected with said turret, a cam disk "havinga 'cam portion at one side thereof, means for 'the disk for holding said portion of the shifting member in-engagement with the cam portion of the disk.

9. A cutting machine includingl a, tool head, a turret movable tovvardy andy avvay` from the tool head, a shifting member conlinected With saidturret, a fcam disk having disk mounted adjacent said continuously a cam portion at one side thereof, means lio for procuring intermittent rotative movements of the disk, a portion of said shifting member being engageable with the cam side of the disk, a plunger slidably carried by Y,

the shifting member and a spring carried t by the shifting member andv resiliently urging said plunger to engagement with thev other side of the cam disk.

20. A cutting machine including a table, a tool vhead mounted on the table, a turret base slidably mounted on the table for movement toward and avvay from the tool head, a

`Workholding member carried bysaid turret base, a shifting bar slidably mounted under the table, said table being provided With an intermediate slot. means connecting the turret base and shifting bar and slidable in said slot, adjustable means connecting the outer ends of the turret base and shifting bar; and f mea-ns engaging the inner end l of the `shifting bar ffor automatically iprocur- Y ing ,reciprocation thereof.

21. A cutting :machine including a-tool head, a work carrying turretmovable toward and away'from the tool head, a shifting member connected with the turret, means engaging-said shifting member for feeding the turret 'toward the tool head, means yieldably urging the shifting member in an opposite direction, a spring urged plunger carriedby the `turret and an abutment vfor said plunger adjacentthedrill head to procure compression of the spring at and adjacentthe limit of movement ofthe turret ,toward the drill head.

22. vA cutting machine including a tool head, a workfcarrying member movable toward ,and away from thetoolhead, means yieldably urgingsaid work .carrying member away Yfrom the tool head, `means for automatically feeding the work carrying member toward the tool head and yieldable means opposing movement of work carr fing memberat and adjacent its -limits of movement toward the tool head for cop` eration with the first-named yieldable means to urge themembers from the head. Y

23. A machine for milling outpreviously cut openings in an annular work member, including a of milling tools and .a chuck adapted to receive ,the work member and movable toward and away from the milling tools, said chuck being provided with an opening adapted for reception of a tool Ato engage also in one of the openings of the work member to aline the openings of said member with the milling tools.

24,-. A cutting machine including a tool head,l a turretrotatably and slidably mounted for movement toward and away from` the tool head, upstanding arms on said turret, a chuck casing carriedby Veach of said arms, gripping jaws inthe outer rportion -ofeach casing, shafts threaded inthe casings and y'90..llriected Wth^the aws cumming :Said l jaws upon Vlongitudinal threading movement of the shafts and handles on said shafts. n

25. In a-machine for Vcutting slots in the wall of an annular work member, an annular gang of milling tools, a Vchuck casing mounted for movement toward and away from the milling tools and having a rcupshaped enlargement there-adjacent, a sleeve mounted in the casing and projected into the enlargement thereof, a collar on said sleeve, resilientjaws `carriedby said collar and in Ycam engagementwith the mouth portionof the enlargement, .a seatingfannulus threadedl on the sleeve outwardly of the collar, a shaft slidable in the sleeve, a connection between the shaft and collar, and means for advancingand retracting the shaft .in the sleeve. Y

26. In amachine forcutting slots in the wall of an annular'work member, an annular gang of milling tools, a chuck casing mounted for movement toward and away from the milling tools and havin-g a `cupshaped enlargement there-adjacent, a sleeve mounted in the casing Vand projected into the enlargement thereof, v a collar on said sleeve, resilient jaws carried by said collar and in cam engagement with the mouth portion of the enlargement,a seating annulus threaded on the sleeve outwardly of the co1lar a shaft slidable in the sleeve, a connection between the shaft and collar, and

Vmeans Vfor Vadvancing and Vretracting `the shaft in the sleeveincluding a second shaft threadedin the chuck casing and having a recess threadedly receiving the first-named shaft, the sets of threads being opposite in nature, and a yhandle on the-second-named shaft. Y

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukeeand State of Wisconsin. s

THEODOR ZETTERLUND. 

